feat: notifies user of bad RD download (failed for copyright, etc.)

src/Download/Action/Input/DownloadMediaInput.php

@@ -10,6 +10,8 @@ use OneToMany\RichBundle\Contract\InputInterface;
 /** @implements InputInterface<DownloadMediaInput> */
 class DownloadMediaInput implements InputInterface
 {
+    public ?string $mercureAlertTopic = null;
+
     public function __construct(
         #[SourceRequest('url')]
         public string $url,
@@ -44,6 +46,7 @@ class DownloadMediaInput implements InputInterface
             $this->imdbId,
             $this->userId,
             $this->downloadId,
+            $this->mercureAlertTopic,
         );
     }
 }